221082299 has 2 divisors, whose sum is σ = 221082300. Its totient is φ = 221082298.

The previous prime is 221082259. The next prime is 221082317. The reversal of 221082299 is 992280122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221082299 is a prime.

It is a super-2 number, since 2×221082299² = 97754765862250802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221082259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110541149 + 110541150.

It is an arithmetic number, because the mean of its divisors is an integer number (110541150).

Almost surely, 2^221082299 is an apocalyptic number.

221082299 is a deficient number, since it is larger than the sum of its proper divisors (1).

221082299 is an equidigital number, since it uses as much as digits as its factorization.

221082299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 221082299 is about 14868.8365045823. The cubic root of 221082299 is about 604.6693993238.

The spelling of 221082299 in words is "two hundred twenty-one million, eighty-two thousand, two hundred ninety-nine".